Wow i am sooooo grateful,
I have a 2005 RX400h
Just spent just over an hr on my garage and did the following.
Firstly i did the Bluetooth mod as this was the one annoying me the most. rather than adding a switch i first wanted to test the theory. I was goinmg to take photos for you but the attached document is so clear and easy to follow that it needs no more. After being ammazed that the wire in the specified location was indeed light blue, i went at it with the snips, I then quickly clipped back the satnav and fired it up......panic - not working, ok it obviously needs the radio connected as well. so i connect the radio and head off down the rd.......fantastic i can use all phone options.
I then decided that actually i had no reason to put a switch on this, there is never a time that i need the restriction back on again and as far as i can tell there are no side affects, so i taped the wires so they dont short and screwed the sat nav, radio and dash back together.
The sat nav mod, was even easier, as it involved far less dismantling of my £30k toy.
Having cut that one, i did find that the functions were all available but the gps locator was a bit screwed, so the switch on this one is necessary. Basically if you want to make changes and use the functions, activate your switch, then when done, switch back again and all will be fine.
I had a simple sigle pole single throw switch from maplin and fitted it in the location as shown in the document.
All done. thanks guys i was so worried that i would never be able to do it.
A few tips:
1) dont be scared it is not difficult, just be really anal when identifying the wires.
2) to find the hidden bolts you want your head down by the gear knob and look upwards you will see then.
3) use a magnetic nut driver, unscrew loads untill you are sure you have un donw it and pull out slowly, try to get another finger in to hould the bolt as you withdraw. (i dropped one, but i really am not bothered too much, the radio is so tightly in with the others) if you do drop it you can get it from the side panels but i could not ve arsed.
4)have someone else to hold the radio/sat nav as you remove them you will need two hands to disconnect the wires and you dont want to srtch it by resting it on the gear stick.
5) dont use a switch for the phone, just cut it.
have fun dont be worried, after all, if you cut the wrong wire, just use a joint block to join it back again.
if you are not up for soldering, just use terminal blocks (chocolate blocks)
This does not void your waranty, the waranty is on the kit not the cabling and people like halfords attack the wiring loom all the time.
Big Boy!!!